hydro power

If you can power your phone with sunlight, and carry water purification equipment on your back, is there any need for large-scale, dirty utilities in the developing world? Those ideas and more in this week’s green tech finds.

What’s your neighborhood’s Bike Score?: The five-year-old Walk Score online service, which rates walkability of neighborhoods, cities, and addresses, now offers a similar metric for bicyclists. The new Bike Score is available in ten cities (and, apparently, Minneapolis is more bike-friendly than Portland – who’da thunk it?). (via The Atlantic Cities)

Where do climate change and Sudoku come together? At your weekly green tech finds, of course… What’s the best computer out there for a student in Cambodia? One that sips energy… and the Open Institute has installed 400 such computers for Cambodian students and teachers. Water heats and cools new classroom building: Michigan’s Saginaw Valley…